Effect of Sm3+ on dielectric and magnetic properties of Y3Fe5O12 nanoparticles
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The Sm3+ doped Y3−xSmxFe5O12 (x = 0–3) nanopowders were prepared using modified sol–gel route. The crystalline structure and morphology was confirmed by X-ray diffraction and atomic force microscopy. The nanopowders were sintered at 950 °C/90 min using microwave sintering method. The lattice parameters and density of the samples were increased with an increase of Sm3+ concentration. The room temperature dielectric (ε′ and ε″) and magnetic (μ′ and μ″) properties were measured in the frequency range up to 20 GHz. The room temperature magnetization studies were carried out using Vibrating sample magnetometer using filed of 1.5 T. Results of VSM show that the saturation and remnant magnetization of Y3−xSmxFe5O12 (0–3) decreases on increasing the Sm concentration (x). The low values of magnetic (μ′ and μ″) properties makes them a good candidates for microwave devices, which can be operated in the high frequency range.
KeywordsSaturation Magnetization Samarium Yttrium Iron Garnet YFeO3 Squareness Ratio
Dr. K. Praveena is thankful to University Grants commission, New Delhi for awarding Dr. D.S. Kothari Post-Doctoral Fellowship.
- 13.F. Bertaut, F. Forrat, C. R. 242, 382 (1956)Google Scholar
- 14.G.P. Rodrigue, J.E. Pippin, W.P. Wolf, C.L. Hogan, Sci. Rep. 11, Gordon McKay Laboratory, Harvard (1957)Google Scholar
- 19.B.D. Cullity, Elements of X-ray Diffraction, 2nd edn. (Addison-Wesley, Reading, MA, 1978)Google Scholar
- 28.D.A. Dler, Solid State Phys. 1, 21 (1968)Google Scholar
- 29.K. Ishino, Y. Narumiya, Ceram. Bull. 66, 1469 (1987)Google Scholar
- 31.V.P. Shilov, J.C. Bacri, F. Gazeau, F. Gendron, R. Perzynski, Y.L. Raikher, J. Appl. Phys. 85(6642), 1–6 (1999)Google Scholar
- 32.M. Ristic, I. Felner, I. Nowik, S. Popovic, I. Czako Nagy, S. Music, J. Alloys Compd. 308, 301 (2000)Google Scholar